What governs the speed at which raindrops fall, sediment settles in river estuaries, and matter is ejected during a supernova? These questions circle around one, deceitfully simple factor: the rate at ...

The particles that are in an atom: protons, neutrons and electrons The particles that are in protons and neutrons: quarks The four fundamental forces: gravity, electromagnetism, the strong force and ...

Symmetry chats with scientists and engineers about doing important work in physics without a doctoral degree. Ronald Richards’ father was a mechanical engineer for Ford Motor Co., and as a child in ...